scholarly journals Modeling skills of pre-service chemistry teachers in predicting the structure and properties of inorganic chemistry compounds

2016 ◽  
Author(s):  
Euis Nursa’adah ◽  
Liliasari ◽  
Ahmad Mudzakir
Keyword(s):  
Inorganic Chemistry ◽  
Structure And Properties ◽  
Chemistry Teachers

scholarly journals Conditions for Experimental Activities at Elementary and High Schools from Chemistry Teachers’ Point of View

2020 ◽  
Vol 25 (1-2) ◽  
pp. 93-100
Author(s):  
Martin Rusek ◽  
Kateřina Chroustová ◽  
Martin Bílek ◽  
Petr A. Skřehot ◽  
Zdeněk Hon
Keyword(s):  
Inorganic Chemistry ◽  
Subject Matter ◽  
Questionnaire Survey ◽  
Chemistry Education ◽  
Occupational Safety ◽  
Point Of View ◽  
Grammar School ◽  
School Teachers ◽  
Chemistry Teachers ◽  
Experimental Activity

Abstract School experiments represent a necessary means of subject-matter presentation in chemistry education and are important for chemical (scientific) thinking. Despite being a focus of several texts, a complex view on the experimental activity in chemistry education in Czechia is missing. The results of a questionnaire survey among 466 lower-secondary, lyceum and grammar school teachers focused on types of conducted experiments, their frequency, the place they are conducted. The most frequently used chemicals and sources of inspiration are presented in the paper. The results show that despite experiments’ significant role in education, its occurrence is rather seldom and teacher’s demonstrations prevail over students’ experiments. The list of the most often used chemicals suggests the experiments are mostly focused on inorganic chemistry. These results open further questions regarding occupational safety at schools as an important factor which could also be the reason for such a low representation of experiments in Czech chemistry education.

scholarly journals EVALUATION OF THE EFFECTIVENESS OF THE USE OF DISTANCE TECHNOLOGIES FOR TEACHING INORGANIC CHEMISTRY AT SCHOOL

2021 ◽  
pp. 186-193
Author(s):  
Kazangapova N. B. ◽  
Madiyarov K. G.
Keyword(s):  
Inorganic Chemistry ◽  
Distance Learning ◽  
Positive Impact ◽  
Learning Technologies ◽  
Educational Process ◽  
Chemistry Teachers ◽  
Proposed Model ◽  
Distance Learning Technologies ◽  
Education Of Students ◽  
Positive Results

The article presents the results of assessing the effectiveness of distance learning of inorganic chemistry for students from school 37 in Nur-Sultan. The research was carried out at the expense of the authors' own funds. The authors partially proved the validity of the model for organizing distance learning of students and the positive impact of its pedagogical conditions. The carried out diagnostics of the effectiveness of the organization of distance learning allows to increase the level of education of students. The use of distance learning technologies gives positive results in the preparation of pedagogical personnel - chemistry teachers and in teaching students, which is very important for the development of the educational process in our country. The proposed model for organizing distance learning in inorganic chemistry at school is characterized by the integrity and interdependence of the following blocks: target, methodological, organizational, procedural, diagnostic, and the effectiveness of the results.

scholarly journals ASPECTS OF HUMANIZATION OF TEACHING INORGANIC CHEMISTRY IN A PEDAGOGICAL UNIVERSITY

2020 ◽  
Vol 66 (2) ◽  
pp. 256-264
Author(s):  
A.Zh. Utemissova ◽  
◽  
Zh. Shokybayev ◽  
Keyword(s):  
Inorganic Chemistry ◽  
Learning Environment ◽  
Professional Competence ◽  
New Technology ◽  
Interactive Methods ◽  
Educational Technologies ◽  
Teaching Chemistry ◽  
Chemistry Teachers ◽  
The Individual ◽  
The Relationship

The authors analyze the concepts of "humanization" and "humanitarian" in the context of teaching chemistry in schools and pedagogical universities. The relationship between the processes of humanization and humanization of chemical education is presented. The humanization of teaching chemistry is considered as a characteristic of the learning process, in particular, through the introduction of educational technologies focused on the student's personality, the priority of humanistic values and ideals in the organization of training. Meaningful humanization creates a new technology of education, i.e. educational technology, distinctive signs which are interactivity, understood as effective multifaceted interaction of the individual with chemical – pedagogical learning environment and promoting formation of professional competence of future teachers of chemistry. The authors describe four groups of interactive methods of teaching chemistry: methods of positive motivation, methods of organizing interactive cognitive and practical activities of the student, reflexive assessment methods, and methods of developing an individual educational learning environment. On the results of the pedagogical experiment, a method of teaching the humanization of inorganic chemistry for the formation of professional competence of future chemistry teachers is given.

Structure of second phases in TiAl alloys containing Cr and B

1991 ◽  
Vol 49 ◽  
pp. 576-577
Author(s):  
Ernest L. Hall ◽  
Shyh-Chin Huang
Keyword(s):  
Grain Size ◽  
Second Phase ◽  
Structure And Properties ◽  
Tial Alloys ◽  
Second Phases ◽  
Interstitial Elements

Addition of interstitial elements to γ-TiAl alloys is currently being explored as a method for improving the properties of these alloys. Previous work in which a number of interstitial elements were studied showed that boron was particularly effective in refining the grain size in castings, and led to enhanced strength while maintaining reasonable ductility. Other investigators have shown that B in γ-TiAl alloys tends to promote the formation of TiB2 as a second phase. In this study, the microstructure of Bcontaining TiAl alloys was examined in detail in order to describe the mechanism by which B alters the structure and properties of these alloys.

Relationships between hierarchical structure and properties in macromolecular systems

1987 ◽  
Vol 45 ◽  
pp. 440-443
Author(s):  
E. Baer
Keyword(s):  
Uniaxial Tension ◽  
Hierarchical Structure ◽  
Inorganic Material ◽  
Hierarchical Structures ◽  
Bone Collagen ◽  
Structure And Properties ◽  
Connective Tissues ◽  
Scale Level ◽  
Fibrous Protein ◽  
Macromolecular Systems

The most advanced macromolecular materials are found in plants and animals, and certainly the connective tissues in mammals are amongst the most advanced macromolecular composites known to mankind. The efficient use of collagen, a fibrous protein, in the design of both soft and hard connective tissues is worthy of comment. Very crudely, in bone collagen serves as a highly efficient binder for the inorganic hydroxyappatite which stiffens the structure. The interactions between the organic fiber of collagen and the inorganic material seem to occur at the nano (scale) level of organization. Epitatic crystallization of the inorganic phase on the fibers has been reported to give a highly anisotropic, stress responsive, structure. Soft connective tissues also have sophisticated oriented hierarchical structures. The collagen fibers are “glued” together by a highly hydrated gel-like proteoglycan matrix. One of the simplest structures of this type is tendon which functions primarily in uniaxial tension as a reinforced elastomeric cable between muscle and bone.

The Structure and Properties of MoSi2 Thin Film in Mos Process

1980 ◽  
Vol 38 ◽  
pp. 326-327
Author(s):  
C.K. Wu ◽  
P. Chang ◽  
N. Godinho
Keyword(s):  
Thin Film ◽  
Integrated Circuits ◽  
High Performance ◽  
Large Scale ◽  
Process Development ◽  
Structure And Properties ◽  
Metal Silicides ◽  
High Oxidation ◽  
Important Approach ◽  
High Oxidation Resistance

Recently, the use of refractory metal silicides as low resistivity, high temperature and high oxidation resistance gate materials in large scale integrated circuits (LSI) has become an important approach in advanced MOS process development (1). This research is a systematic study on the structure and properties of molybdenum silicide thin film and its applicability to high performance LSI fabrication.

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